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# QDI COMPUTER, INC.
VL/ISA-PB486P3
Processor 80486SX/CX486DX/80486DX/SL80486DX/80486DX2/(SL)80486DX2/
AM486/80486DX4
Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/
Speed 100(internal)MHz
Chip Set OPTI
Video Chip None
Set
Maximum 64MB
Onboard
Memory
Maximum None
Video
Memory
Cache 128/256/512KB
BIOS AMI
Dimensions 254mm x 218mm
I/O 32-bit VESA local bus slots (3), green PC connector
Options
NPU None
Options
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|--------------------+----------+-----------------+----------|
| Power LED & | J2 | Reset switch | S1 |
| keylock | | | |
|--------------------+----------+-----------------+----------|
| Speaker | JP18 | 32-bit VESA | SL1 - |
| | | local bus slots | SL3 |
|--------------------+----------+-----------------+----------|
| Green PC connector | JP21 | Turbo LED | TBLED |
|--------------------+----------+-----------------+----------|
| Green PC connector | JP32 | Turbo switch | TBSW |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|---------------------------------------+-------+------------|
| » | Factory configured - do not alter | JP12 | Open |
|---+-----------------------------------+-------+------------|
| » | Factory configured - do not alter | JP14 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | Factory configured - do not alter | JP23 | Open |
|---+-----------------------------------+-------+------------|
| » | CMOS memory normal operation | JP26 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | CMOS memory clear | JP26 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | Monitor type select color | JP30 | Closed |
|---+-----------------------------------+-------+------------|
| | Monitor type select monochrome | JP30 | Open |
|---+-----------------------------------+-------+------------|
| » | Factory configured - do not alter | JP37 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | Factory configured - do not alter | JP44 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | Factory configured - do not alter | JP45 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | Factory configured - do not alter | JP46 | Pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 1MB | (4) 256K x 9 | None | None |
|------------+---------------+---------------+---------------|
| 2MB | None | (1) 512K x 36 | None |
|------------+---------------+---------------+---------------|
| 4MB (A) | (4) 1M x 9 | None | None |
|------------+---------------+---------------+---------------|
| 4MB (B) | None | (1) 1M x 36 | None |
|------------+---------------+---------------+---------------|
| 4MB (C) | None | (1) 512K x 36 | (1) 512K x 36 |
|------------+---------------+---------------+---------------|
| 6MB | None | (1) 512K x 36 | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 8MB (A) | (4) 1M x 9 | None | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 8MB (B) | None | (1) 2M x 36 | None |
|------------+---------------+---------------+---------------|
| 8MB (C) | None | (1) 1M x 36 | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 10MB | None | (1) 512K x 36 | (1) 2M x 36 |
|------------+---------------+---------------+---------------|
| 12MB (A) | (4) 1M x 9 | None | (1) 2M x 36 |
|------------+---------------+---------------+---------------|
| 12MB (B) | None | (1) 1M x 36 | (1) 2M x 36 |
|------------+---------------+---------------+---------------|
| 16MB (A) | (4) 4M x 9 | None | None |
|------------+---------------+---------------+---------------|
| 16MB (B) | None | (1) 4M x 36 | None |
|------------+---------------+---------------+---------------|
| 16MB (C) | None | (1) 2M x 36 | (1) 2M x 36 |
|------------+---------------+---------------+---------------|
| 16MB (D) | (4) 4M x 9 | (1) 2M x 36 | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 20MB (A) | (4) 1M x 9 | None | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 20MB (A) | None | (1) 1M x 36 | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 32MB (A) | (4) 4M x 9 | None | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 32MB (B) | None | (1) 4M x 36 | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 32MB (C) | None | (1) 8M x 36 | None |
|------------+---------------+---------------+---------------|
| 64MB (A) | None | (1) 8M x 36 | (1) 8M x 36 |
|------------+---------------+---------------+---------------|
| 64MB (B) | (4) 4M x 9 | (1) 8M x 36 | (1) 4M x 36 |
|------------------------------------------------------------|
| Note: The location of banks 1 & 2 are unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP42 |
|----------------------------+-------------------------------|
| 1MB | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 2MB | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 4MB (A) | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 4MB (B) | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 4MB (C) | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 6MB | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 8MB (A) | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 8MB (B) | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 8MB (C) | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 10MB | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 12MB (A) | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 12MB (B) | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 16MB (A) | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 16MB (B) | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 16MB (C) | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 16MB (D) | Pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 20MB (A) | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 20MB (A) | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 32MB (A) | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 32MB (B) | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 32MB (C) | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 64MB (A) | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 64MB (B) | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|-----------+----------------+---------------+---------------|
| 128KB | (4) 32K x 8 | None | (1) 8K x 8 |
|-----------+----------------+---------------+---------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
|-----------+----------------+---------------+---------------|
| 512KB | (4) 128K x 8 | None | (1) 32K x 8 |
|------------------------------------------------------------|
| Note: The location of banks 0 & 1 and the TAG are |
| unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP10 | JP11 | JP13 | JP35 |
|-------+--------+--------+-----------------+----------------|
| 128KB | Open | Closed | Pins 1 & 2 | Pins 1 & 2 |
| | | | closed | closed |
|-------+--------+--------+-----------------+----------------|
| 256KB | Closed | Closed | Pins 2 & 3 | Pins 1 & 2 |
| | | | closed | closed |
|-------+--------+--------+-----------------+----------------|
| 512KB | Closed | Closed | Pins 1 & 2 | Pins 2 & 3 |
| | | | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| Speed | JP38 | JP39 |
|--------------------+-------------------+-------------------|
| 25MHz | Open | Closed |
|--------------------+-------------------+-------------------|
| 33MHz | Closed | Open |
|--------------------+-------------------+-------------------|
| 40MHz | Open | Open |
|--------------------+-------------------+-------------------|
| 50iMHz | Open | Closed |
|--------------------+-------------------+-------------------|
| 50MHz | Closed | Closed |
|--------------------+-------------------+-------------------|
| 66iMHz | Closed | Open |
|--------------------+-------------------+-------------------|
| 75iMHz | Open | Closed |
|--------------------+-------------------+-------------------|
| 80iMHz | Open | Open |
|--------------------+-------------------+-------------------|
| 100iMHz | Closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION |
|------------------------------------------------------------|
| Type | JP3 | JP4 | JP5 | JP6 | JP7 |
|------------------+--------+-------+--------+-------+-------|
| 80486SX | Open | Open | Open | 1 & 2 | Open |
|------------------+--------+-------+--------+-------+-------|
| SL80486SX | Open | Open | Open | 1 & 2 | Open |
|------------------+--------+-------+--------+-------+-------|
| CX486DX (1x) | 1 & 2 | Open | 2 & 3 | 2 & 3 | Open |
|------------------+--------+-------+--------+-------+-------|
| CX486DX (2x) | 1 & 2 | Open | 2 & 3 | 2 & 3 | Open |
|------------------+--------+-------+--------+-------+-------|
| 80486DX | 1 & 2 | Open | 2 & 3 | 1 & 2 | Open |
|------------------+--------+-------+--------+-------+-------|
| SL80486DX | 1 & 2 | Open | 2 & 3 | 1 & 2 | Open |
|------------------+--------+-------+--------+-------+-------|
| 80486DX2 | 1 & 2 | Open | 2 & 3 | 1 & 2 | Open |
|------------------+--------+-------+--------+-------+-------|
| AM486 3.3v (2x) | 1 & 2 | Open | 2 & 3 | 1 & 2 | 2 & 3 |
|------------------+--------+-------+--------+-------+-------|
| AM486 3.3v (3x) | 1 & 2 | Open | 2 & 3 | 1 & 2 | 1 & 2 |
|------------------+--------+-------+--------+-------+-------|
| 80486DX4 | 1 & 2 | Open | 2 & 3 | 1 & 2 | Open |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION (CON’T) |
|------------------------------------------------------------|
| Type | JP8 | JP9 | JP22 | JP24 | JP25 |
|-----------------+--------+-------+-------+--------+--------|
| 80486SX | 2 & 3 | Open | 1 & 2 | Open | Open |
|-----------------+--------+-------+-------+--------+--------|
| SL80486SX | 2 & 3 | Open | 1 & 2 | Closed | Closed |
|-----------------+--------+-------+-------+--------+--------|
| CX486DX (1x) | 1 & 2 | 1 & 2 | 1 & 2 | Open | Open |
|-----------------+--------+-------+-------+--------+--------|
| CX486DX (2x) | 1 & 2 | 1 & 2 | 1 & 2 | Open | Open |
|-----------------+--------+-------+-------+--------+--------|
| 80486DX | 1 & 2 | Open | 1 & 2 | Open | Open |
|-----------------+--------+-------+-------+--------+--------|
| SL80486DX | 1 & 2 | Open | 1 & 2 | Closed | Closed |
|-----------------+--------+-------+-------+--------+--------|
| 80486DX2 | 1 & 2 | Open | 1 & 2 | Open | Open |
|-----------------+--------+-------+-------+--------+--------|
| AM486 3.3v (2x) | 1 & 2 | Open | 1 & 2 | Open | Open |
|-----------------+--------+-------+-------+--------+--------|
| AM486 3.3v (3x) | 1 & 2 | Open | 1 & 2 | Open | Open |
|-----------------+--------+-------+-------+--------+--------|
| 80486DX4 | 1 & 2 | Open | 1 & 2 | Closed | Closed |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION (CON’T) |
|------------------------------------------------------------|
| Type | JP27 | JP36 | JP40 | JP43 |
|--------------+----------------+------------+--------+------|
| 80486SX | Open | Pins 1 & 2 | Open | Open |
| | | closed | | |
|--------------+----------------+------------+--------+------|
| SL80486SX | Open | Pins 2 & 3 | Open | Open |
| | | closed | | |
|--------------+----------------+------------+--------+------|
| CX486DX (1x) | Pins 1 & 2 | Pins 1 & 2 | Open | Open |
| | closed | closed | | |
|--------------+----------------+------------+--------+------|
| CX486DX (2x) | Pins 2 & 3 | Pins 1 & 2 | Open | Open |
| | closed | closed | | |
|--------------+----------------+------------+--------+------|
| 80486DX | Open | Pins 1 & 2 | Open | Open |
| | | closed | | |
|--------------+----------------+------------+--------+------|
| SL80486DX | Open | Pins 2 & 3 | Open | Open |
| | | closed | | |
|--------------+----------------+------------+--------+------|
| 80486DX2 | Open | Pins 1 & 2 | Open | Open |
| | | closed | | |
|--------------+----------------+------------+--------+------|
| AM486 3.3v | Open | Pins 1 & 2 | Open | Open |
| (2x) | | closed | | |
|--------------+----------------+------------+--------+------|
| AM486 3.3v | Open | Pins 1 & 2 | Open | Open |
| (3x) | | closed | | |
|--------------+----------------+------------+--------+------|
| 80486DX4 | Open | Pins 2 & 3 | Closed | Open |
| | | closed | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | JP1 |
|-------------------------------+----------------------------|
| 3.3v | Open |
|-------------------------------+----------------------------|
| 5v | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VL BUS WAIT STATE SELECTION |
|------------------------------------------------------------|
| Setting | JP33 |
|---------------------------------+--------------------------|
| » | 0 | Open |
|--------+------------------------+--------------------------|
| | 1 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VL BUS SPEED SELECTION |
|------------------------------------------------------------|
| Speed | JP34 |
|---------------------------------+--------------------------|
| » | <= 33MHz | Open |
|----+----------------------------+--------------------------|
| | >33 MHz | Closed |
+------------------------------------------------------------+